Apparatus for rolling helicoid conveyer flight



Nov. 11, 1941. H. o. FULSON 2,252,227

I APPARATUS FOR ROLLING HELICOID CONVEYER FLIGHT Filed NOV. 25, 1938 8Sheets-Sheet l :5 I Znvenzfor. firm afiama 5 Nov. 11; 1 941. H. o.FULSON APPARATUS FOR ROLLING HELICOID CONVEYER FLIGHT 8 Sheets-Sheet 2Filed Nov. 25, 1938 m N Z a ia n firm v m W Nov. 11, 1941.

H. O. FULSON APPARATUS FOR ROLLING HELICOID CONVEYER FLIGHT V Filed Nov.25, 1958 8 Sheets-Sheet 4 Inn /Rio?" Hiram 0 Eldon H. O. FULSON Nov.--11, 1941.

APPARATUS FOR ROLLING HELICOID'CONVEYER FLIGHT 8 Sheets-Sheet 6 FiledNOV. 25, 1938 Nov. 11, 1941.. H. o. FULSON 2,262,227

APPARATUS FOR ROLLING HELIG'QID UDNVEYER FLIGHT Filed NOV. 25, 1938 3Sheets-Sheet 1-6 to rrae p' Nov. 11, 1941. Q FULSON 2,262,227

APPARATUS FOR ROLLING HELIGOID GONVEYER FLIGHT Filed Nov. 25, 1938 8Sheets-Sheet 8 Patented Nov. 11, 1941 APPARATUS FOR ROLLING HELICOIDCONVEYEB FLIGHT Hiram 0. Poison, Chicago, 111.. assignor to Link- BeltCompany, s corporation of Illinois Application November 25, 1938, SerialNo. 242,198

13 Claims.

My invention relates to apparatus for cold rolling helicoid'llight suchas is used in connection with spiral or screw conveyers.

One object of my invention is to provide new and improved means wherebyvarious sizes and dimensions of helicoid conveyer flight may with aminimum of diflicuity be cold rolled on the same machine.

Another object of my invention is to provide an apparatus for coldrolling helicoid conveyer which is durable, accurate and relativelyinexpensive to manufacture.

Another object is to provide a device which, with a minimum ofadjustment can roll right hand or left hand heiicoid flight of differentpitches.

Another object is to provide means whereby adjustment for wear andslight changes may be easily and conveniently made.

Other objects will appear from time to time throughout the specificationand claims.

Conveyer flight was first made by slitting an bending washers to formshort sections of spiral flight which were welded or otherwise fastenedtogether and mounted upon a pipe. Later metal strip was heated and thenhot rolled and latterly apparatuses were built which would cold rollspiral conveyer. However, all flight conveyer apparatuses with which Iam familiar involve the use of different rolls or relatively expensiveadjustments for forming diiferent sizes and shapes of conveyer flightwithin narrowly restricted ranges. The result of this is that when achange in the product is to be made outside of the narrowly restrictedrange of a current setting, the machines heretofore used must haveexpensive adjustments made or be dismantled,

new parts interchanged with the parts previously used, the machine mustagain be adjusted and a number of trial runs made with adjustmentbetween runs until the proper size and shape of flight is obtained; Itthus requires a relatively large expenditure to change the machineshitherto in use when 'a different product is to be produced.

' With my apparatus, on the other hand, one set of rolls will handle awide range of helicoid conveyer flight and the adjustments necessary tochange from one size or shape to another are Figure "1 is a perspectiveview of the machinewith parts omitted;

Figure 2 is-a plan view with parts omitted; Figure 3 is a section alongthe line 3-4 of Figure 2;

Figure 4 is a plan of the table top with the top 5 partly broken away todisclose the I-beam reinforcing below and with many parts omitted for sthe sake of clearness;

Figure 5 is a partial plan view of the table top with roll shaft housingand associated parts in section;

Figure 6 is a section along 'the line 6-8 of a Figure 5;

Figure 7 is a section'along lthe curved line l-| of Figure 3; V

Figure 8 is a section along the line 3-3 of Figure 3;

Figure 9 is a perspective of a type of stock guide plates and rollercages in disassembled arrangement;

Figure 10 is a section along the line ill-ll of Figure 3; g

Figure 11 is a section along the line il-ll of Figure 3;

Figure 12 is a plan view of the conical formin rolls showing a righthand conveyer take-011 with a wedge and forming pin;

Figure 13 is a front elevation of the parts shown-in Figure 12;

Figure 14 is a diagrammatic side elevation of the elements shown inFigure 13 with parts in section showing a right hand conveyer flightissuing from the machine;

Figure 15 is a detail showingv conveyer wherein pitch and outsidediameter. are approximately equal;

Figure 16 is a detail showing conveyer wherein Z pitch is approximatelyone-half of outside diameter; Figures 15- and 16 also illustrate thecontrasting angles of the inner helix and the outer 40 helix and alsoshow the diflerence between the angle of discharge of the conveyerflight rolled on my machine and that heretofore used;

Figure 17 is a diagrammatic lay-out of the conveyer parts to illustratemethod of computaurtion of contour of parts, location of stock andadjustment of rolls.

Like parts are indicated by like characters throughout the specificationand drawings.

I is a tabletop. It is supported by legs 2. The top is generallytriangular in cross section. The

legs are tied together at the bottom by a horizontal framework 3, and atthe top by a plurality of vertical parallel I-beams l, joined by shortperpendicular intermediate members I. as upon which the table top I,rests, all uniting to make a rigid stiif, solid structure. At theopposed ends of some of the I-beams are oblong bolt holes or slots 6,registering with similar holes I, in the table top I, as indicated. Thepurpose of these apertures will subsequently appear.

Welded or otherwise permanently attached to the table top I, are fourspaced rectangular sockets 8 and 9. These sockets all have inwardlyextending. set screws I 0, which may be adjustable toward and from oneanother and the sockets 9 have associated with them brackets II,

which are rigidly attached to the I-beam'strucr ture below' the tabletop, are welded to the table top as indicated and overhang the socket 9,each bracket having a plurality of set screws I2, which may be adjustedas indicated. The sockets 8 and 6 are arranged in two opposed pairs, onealong each edge of the table top I, along inter- .secting axes. I

Supported on the table top are two hollow shaft housings l5, eachterminating in enlarged bearing pockets or sleeves I6, II. Each of thesetwo bearing sleeves has a foot i8, adapted to rest upon the table topand each foot has a plurality of diagonal slots I9. When these feet areplaced within the sockets Band 9, the slots I9 intersect the slots 6, sothat holding bolts 26 may pass through both slots and because of thefact that the slots intersect, they permit adjustment of the foot in itsposition within the socket. The set screws I2 may also be manipulated toexert a pressure upon the pads 2|. 22 is a roll shaft, there being onein each sleeve I5. These roll shafts are supported on anti-frictionbearings 23, 24, which bearings are contained within the en-'- largedpockets I6 and I1. These pockets are closed attheir outer ends by covers25, 26, which covers are provided with grease seals 21, 2,6, the

seal 2! being associated with the reduced end 29, v

of the shaft 22. The seal 28 being associated with a sleeve 36 at therear end of the conical -roll 3|, which is rigidly mounted on the shaft22. 32 is a driving sprocket on the reduced end 29, of the shaft. Thereare two such shafts and the arrangement for driving, mounting,supporting and lubricating them is the same in each case, there beingone shaft in each of the shaft housings I5, so that the conical rolls atthe front of the machine as indicated in Figure 1 come toof extendingrearwardly as indicated at 31, to

engage turnbuckles 38, which turnbuckles also engage tension members 39,pivoted on lugs 40,

on the two'sleeves II, furthest removed from the conical rolls.

interposed between similar lugs 40 respectively on the sleeve II,associated with one roll housing and the sleeve I6, associated with theother, is a tension member 4|, including two separate threaded rodsjoined by a turnbuckle 42. A similar tension member 43 joins the otherpair of sleeves I6 and I1, this member 43 being bifurcated intermediateits two ends to permit passage of the member 4|, and being provided witha similar turnbuckle 42. on the two sleeves I1, is a compression-tensionmember 44, which includes yokes 45, into which are threaded in oppositedirections the capstan member 46. Also joining the two lugs 40, on thetwo sleeves I6, adjacent the rolls is a similar compression-tensionmember 41.

By manipulation of these compression-tension members, after releasingthe set screws and holdingbolts which hold the feet upon which the shafthousings are supported, it is possible by manipulating the variouscompression-tension members to adjust the relative positions of theconical rolls, the rolls may be moved longitudinally parallel with theiraxes. They may be moved transversely by adjustment at either end,

thus making it possible to provide a wide range of adjustment of thesize and shape of the pass or area between the opposed portions of thetwo conical rolls. If desired, the set'screws associated with thesockets may be used to assist in making this adjustment and once it ismade all the set screws, holding bolts, tension-compression members mayall be tightened up to rigidly hold, so far as that is possible in anymachine, the two conical rolls in desired working relation.

In line with the angles 35, the table top I is slotted and two opposedhorizontal channel members 5|, 52, extend vertically through this slot,being weldedto the table and to the front I- beams which are cut away topermit passage of the channel plates. 53 is a plate welded to the rearend of the two channels and extending vertically from a point above to apoint below the table top I, and having a right angle extension 54,.which underlies and is welded to the channel flanges. This extension isperforated in line with a nut 55, the purpose of which will hereinafterappear.

56 is a plate joining the front edges of the ;channels 5| and 52, justas the plate 53 joins their rear edges. The upper portions of thechannels 5| and 52 are cut away as at 51, adjacent the rolls 3|, so thatthe flanges 58 along the upper edges of the channels terminate adjacentthe apices of the rolls. 59 is a hollow square tube intersectingtheforwardly extending flanges of the angles 35, which are cut away forthat purpose. This tube is welded to the angles, projects across themachine and supports and contains welded therein a nut 60, the purposeof which will hereinafter appear.

6| is a bracket associated with one of the table support columns 2. Itcarries an inclined stub shaft 62, on which is mounted for rotation areel 63, adapted to carry the stock or steel ribbon 64, which is to beused to form the helicoid flight. This steel ribbon is adapted to be fedupwardly from below into the pass between the rolls whereby it is formedinto conveyer flight.

The means for guiding the stock include two opposed wear plates 65, 66having a plurality of bosses 61, threaded to be engaged by studs 66,which enter through the channels 5|, 52 by holes 66. These holes may besomewhat, larger than the studs so as, if desired, to permit somemeasureof adjustable movement of thestuds where they engage the bosses toassist in positioning the wear plates 65, 66. These wear plates arenotched as indicated at III, and terminate at their upper ends in guidemembers I I, I2, having tapered extremities I3, adapted to conformgenerally to the contour of the rolls so that these wear plates mayguide the stock as closely up to the pass between the rolls as possible.are channel cages adapted to enclose the notched edges of the wearplates and terminating in heads II, 12. Each of these cages carriespreferably three rollers 15, which flt within the recesses or notches18, and are adapted to engage the opposed edges of the stock. There isan additional roller 11, carried by the guide heads 1|, 72, immediatelyadjacent the pass where the stock enters the rolls. All this mechanism,including wear plates, cages, etc. is contained within the box formedbetween the two channel plates 5|, and 52, and the wear plate and cageassembly may be removable and interchangeable to provide for a range ofstock of different width and different thickness. A

To roll conveyer flight of different diameters, it is important to beable to adjust the position of the stock as it is fed to the rolls.This-is accomplished by the two wedges 8|, 82, which are slotted at 88,84, as indicated to engage screw heads 85, 85, on screws 81, 88,threaded respectively in the nuts 55 and 88. These screws are providedwith capstan bars 89. If desired, a flller plate 88, may be interposedbetween the wedge 82, and the cage 14, or the wedge 8|, and the cage 15,as the case may be, depending upon the position on the rolls that it isdesired to have the stock enter. The use of the two opposed wedges makesit possible to move the whole feed box assembly including the wearplates, the rollers, the cage and the bosses in a directionperpendicular to the plane deflned by the axes of the two rollers sothat the stock may enter the rolls close to or far from their apices.The

wedges may also, be used to supply a sufficient initial pressure uponthe opposed edges of the stock to insure proper operation,

When a is desired to disassemble the feed box,

the pressure on the wedges is released and the box may then be withdrawnfrom below because the flanges of the channels are outwardly disposed.When the box has been withdrawn, it is ward which the flight is to go.The reason for and effect of this will hereinafter appear.

IN is a bracket slidable along the shaft 58. It is adapted to be lookedin position by means of a set screw I82. This bracket carries theupright I83, upon which is slidably mounted a sleeve I84,

. which may be angularly and vertically adjusted and held in position bythe set screw I85; projecting laterally from this sleeve I84, is anothersleeve I 88, inclined to the sleeve I84. Under some circumstances, thesleeves I86 and I84 may be angularly adjustable with respect to oneanother or under other circumstances they may be adjusted once and forall and welded or otherwise rigidly fastened together. The sleeve I85carries axially adjustable therein a flight guide I81, adapted to beadjusted in position to engage the flight as it passes out from betweenthe pass in opposition to the wedge 8|.

I I8 is a motor mounted on a platform I I I, beneath the table top I.This motor drives by means of a gear reducer H2, and chain H3, one ofthe sprockets 82. A similar motor gear reducer and chain drives theother sprocket 32 so that there is a separate drive and separate. gearreduction for each of the two rolls, there being no mechanicalconnection between them except that provided by the stock in the passbetween them, which, experience teaches is entirely sufllcient tomaintain therolls inproper coordination,

Figures 12, 13, and 14 diagrammatically show the discharge of the stockfrom the pass between the rolls. Figure 13 shows the rolls as you wouldlook at them standing in front of the machine. Figure 12 shows the rollsas you would look down on them from above. Figure 14 shows the roll ifthe near roll and, associated elements were removed. In each case aright hand helicoid con- As the stock is fed up through the pass betweenthe rolls, it is distorted. The thickness remains constant orsubstantially constant at its inner periphery and is greatly decreasedat its outer periphery. As a result, the inner periphery or the flightis short relatively to the outer periphery, this causes the stock totake generally the shape shown in Figure 8. Whichever way it goes,however, to the right or left as it comes out of the pass decides thequestion whether the flight is going to be a right hand or left handflight. In order to control this, I use a wedge 8|, which will beyieldingly held in the space between the rolls immediately adjacent thedischarge side of the pass by a spring support 82, pivoted at 88, on abracket 94, supported by the upper ends of the angles 35. At its rearend, this spring is supported by links 95, on angles 88, which extend upthrough. the table top I. The wedge 8| is adjustably positioned on thespring lever 82, by means of a plurality of spaced holes 81, engaged bystuds 88 so that the wedge may be longitudinally adjusted in consonancewith longitudinal adjustment of the position of the feed box and stockfor different positions of the pass along the face of the rolls.

If the flight is to be discharged to the right, the wedge is placed onthe right hand side of the flight instead of as would at flrst thoughtbe expected on the left hand side. In other words, the wedge is placedon the side of the flight toveyer flight is shown.

Considering first the aspect of the flight as in Figure 13, the rollsare so positioned that the thickest part of the flight is nearest to theapices of the rolls and nearest to the point at which the axes of therolls prolonged, intersect, that is, at the point of minimum diameter ofthe roll the flight is the thickest and as the diameters or the rollsincrease, the pass between them decreases and the flight decreases inthickness. As the stock comes up through the "pass, the tendency is forit to form a Washer, the decreased thickness of the outer peripheryresulting in an increased peripheral length and if nothing were doneabout it, the stock would tend to form a flat or nearly flat series ofwashers.

The guiding means applied to the flight after it has come through thepass determine whether or not the flight shall be right or left hand anddetermine the pitch. Itwill be noted that the stiflest part ofthe'flight is at the inner periphery where the thickness has been littleif any reduced. There is a tendency tor the stock to come straight up,bisecting the angle between the opposed rollfaces. The flight guidemember I81 engages the near face of the flight, and wedge 8| engages theforward side of the flight, as seen in Figure 13. The wedge tends tobend the thinner less resistant portion of the flight to the left, inFigures 12 and 13 in the direction opposite to the direction the flightis going to take in leaving the .rolls. The guide I81 tends to cause theflight to discharge from the rolls minimum while the change in directionor change in angle of the lighter, thinner, more flexible portion of theflight is a maximum. These two cooperating guide elements are all thatis required to determinethe direction of travel and the pitch. The wedge9|, forcingthe thinner portion of theflight over to the left causes theflight itself to form as it is discharged from the roll, the desiredpitch of the stock to conform to the pitch imposed upon it by the guideI01..

The idea of cold rolling helicoid conveyer flight is not new. Theimportant thing about my device is that on one machine with one pair ofrolls by merely adjusting the apparatus, I am able to roll a variety ofdiameters inside and outside and a variety of pitches and bysubstituting a single easily removable and easily adjustable feed box, I'am able to roll stock of different width and thickness.

In setting up my apparatus, it is essential that the proper location ofthe stock within the rolls, that is the proper position and shape of theparts' be predetermined, and the starting point for this is adetermination of the distance from the inside edge of the stock to'thepoint of intersection of the axes of the rolls.

Figure 17 is a diagrammatic fragmentary showing of the position of therolls for rolling six inch flight showing in dotted lines the positionof the rolls for sixteen inch flight and in dash lines the position ofthe rolls for a nine inch flight. I

access may be had to the end of the screw to pin or weld the head to thescrew in the pocket. in" the wedge.

The stub shaft 62, which carries the reel 63,,

is mounted on a slide block I25, which travels between the channels I26,I21, on the frame.

This block may be horizontally displaced by a screw I28, threadedin thenut I29, rigidly supported on the channels [26, I21, so as to adjust theposition of the reel to insure that the stock as it is paid off the reelinto the feed box will always be discharged tangentially from the reeland will travel a straight path from such tangential discharge to thefeed box.

In order to assist in positioning the feed box in place, it may besupported by a diagonal screw I30, threaded in a nut l'3l, supportedbetween the angles 35. This nut is sufliciently forward that the feedbox when the pressure on the wedges has been released may be rotatedenough to pass down between the wedge 8i, and

the nut II, and the inner end of the screw I30,

" cumstances, be rigidly supported,

It will be noted that in each case the angles a between the rolls variesfrom size to size, also that the distance between the roll apices andthe starting point 0 also varies from size to' size, thus demonstratingthe necessity of providing in a machine of this type means for adjustingthe rolls axially along the center line of the rolls, laterally at thefront ends of the roll shafts and laterally at the back ends of the rollshafts.

This three-way adjustment of the roll shafts as indicated in Figure 17,in my experience is of interchangeable wear plates maybe used, and

the holes in the channels 5!, 52, under these circumstances will be ofsuch size and shape that when the studs are inserted into the bosses topermit withdrawal of the box. The slight inclination of the screw is notsufficient to interfere with this operation.

Althoughthe wedge 9|, might under some cirexperience teaches that it isbetter to have it spring supported, because a smoother action resultsand there is less danger of scarring the flight as it is discharged frombetween the rolls or of obstructing'the movement of the flight betweenthe rolls. I

With particular referencetoFigure 5, the antifriction bearing,immediately adjacent the roll end of the shaft -takes both radial andthrust load. Of course, the radial load is a maximum for any pair ofwear plates, the wear plates will be flxed in position. The proper wearplates will be selected and will be bolted into position, thewedgesbeing used both to assist in registering the wear plates with thestud holes in, the channels and to help carry the load on the bloftstSuch an arrangement insures a positive nonchanging positioning of thewear plates for each hole in one or both of the channel plates so thatadjacent the roll so that by having that hearing take only radial load,the total burden on the two bearings is satisfactorily divided. I

Another important function of the feed box adjusting wedge is inconnection with the initial setting up of the apparatus for a new' sizeof helicoid conveyer flight. When the calculations have been made forsetting up the rolls to properly shape and position the pass and forpositioning the feed box in proper alignment with the pass, the variousroll adjusting means and the-feed boxadjusting wedges will bemanipulated to set the machine up according to the desired adjustment,then flight may be rolled.

If it happens that because of slight inaccuracies .chine, then thepositions of the various parts may be scribed or otherwise indicated onthe table top and on the feed box support and at that time the feed boxbosses may be welded in place so that whenever it is necessary to setthe machine up again for the particular conveyer flight, the parts maybe reset without further calculations.

In connection with Figures 15 and 16, conveyer flight has been shownboth as discharged from the rollsaccording to my invention and as todevices of the past for the purposeof pointing out andemphasizinglthefact that by my arrangement with the conveyer flight sodischarged and so guided that the central axis of the helix makes anacute angle with a plane tangent to the forming rolls extending fromthem in the general direction of discharge, the stiffer thicker portionof the helix is given a minimum bend, thereby decreasing the burden uponthe rolls and guiding elements and also decreasing the distortion of themetal.

Referring especially to Figures 15 and 16, which show two right handhelicoid flights of diflerent pitch but the same outside diameter, andadapted to be mounted on the'same size pipe, the stock in each caseapproaches the rolls along the line x-x. As the helicoid'is formed bythe rolls, the wedge 9| forces the outer thinner, less resistant portionof the helicoid to the left, and the thicker, stiifer, more resistantinner portion of the helicoid is deflected slightly to the right. Thethinner portion that was first deflected to the left as the helicoid isrolled out, travels in unison with the inner thicker portion windingabout it so that the whole helicoid is discharged along the line .r'x"which is the center of the helix. of the inner stiffer helix. Thus thereis a minimum of distortion of the thicker portion of the helicoid as itis discharged from the roll. This is in sharp contrast with previouspractice as indicated by the dotted line helicoid where instead ofcausing the two edges of the helicoid to discharge from the rolls, oneon each side of the line of approach, the whole helicoid is forciblybent to the right so that the thinner portion of the helicoid isdischarged generally parallel with the line of approach and thedeflection of the thicker, stiffer edge of the helicoid is greatlyincreased.

As a result, the distortion of the metal in my apparatus is reduced to aminimum in contrast with previously known devices where the distortionis a maximum. Because I allow 'the stiff portion of the helicoid .so-faras possible to travel the path it normally would travel doing themaximum amount of bending with respect to the thin, rather than thethick edge, .I am able to use much lighter and cheaper guiding andpositioning means. The wear on them and on the flight and the danger ofscoring or distorting the flight is reduced to a minimum and even moreimportant experience teaches that by my method the power requirementsare substantially cut in half. The reverse of the above deflectionswould apply for left hand conveyer. The line :r:'-y indicates the centerline of the helicoid discharged according tothe old method.

It will be realized that while I have described and illustrated anoperative machine, still many changes might be made in the size, shape,ar-

rangement and disposition of parts without de-- parting materially fromthe spirit of my invention and I wish, therefore, that my showing betaken as in alarge sense diagrammatic.

I claim:

1. In an apparatus for rolling helicoid conveyerflight, a pair ofopposed generally conical rolls,

means for guiding the stock to be formed toward the pass between therolls and for constraining it in its travel to a plane perpendicular tothe plane defined by the axes of the rolls and bisect- The line a:'-a:"'is the line plane of approach of the stock, the thin edge of the wedgebeing presented to the formed flight as it emerges from the pass betweenthe rolls.

2. In an apparatus for rolling helicoid conveyer flight, a pair ofopposed generally conical rolls, means for guiding the stock to beformed toward the pass between the rolls and for constraining it in itstravel to a plane perpendicular to the plane defined by the axes of therolls and bisecting the angle between said axes, a wedge member whosewidth is substantially equal to the width of the stock, means forholding the wedge member in position between the rolls on the sideopposed to the guide means in substantially the plane of approach of thestock, the thin edge of the wedge being presented to the formed flightas it emerges from the pass between the rolls, meansv adapted toyieldingly urge the wedge in a direction opposite to the direction ofmovement of the flight from the rolls. i

3. In an apparatus for rolling helicoid conveyer I flight, a pair ofopposed generally conical rolls,

means for guiding the stock to be formed toward the pass between therolls and for constraining it in its travel to a plane perpendicular tothe plane defined by the axes of the rolls and bisecting the anglebetween said axes, a wedge member whose width is substantially equal tothe width of the stock, means for holding the wedge mem? her in positionbetween the rolls on the side opposed to the guide means insubstantially the plmie of approach of the stock, the thin edge of thewedge being presented to the formed flight as it emerges from the passbetween the rolls, means for adjustably positioning the wedge in adirection longitudinally of the pass between the rolls.

4. In an apparatus for rolling helicoid conveyer flight, a pair ofopposed generally conical rolls, meansfor guiding the stock to be formedtoward the pass between the rolls and for constraining it in its travelto a plane perpendicular to the plane defined by the axes of the rollsand bisecting the angle between said axes, a wedge member whose width issubstantially equal to the width of the stock, means for holding thewedge member in position between the rolls on the side opposed to theguide means in substantially the plane of approach of thestock, the thinedge of the wedge being presented to the formed flight as it emergesfrom the pass between the rolls, a guide member adapted to engage theside of the flight opposite to the side engaged by the wedge at a pointin its travel entirely out of register with and beyond the area ofengagement of the wedge. v

5. In an apparatus for rolling helicoid conveye flight, a bed plate, apair of conical rolls supported on one side thereof, and adapted torotate about axes generally parallel with the plate, a box framestructure projecting from the side of the bed plate opposite the sideupon which the rolls are supported in general alignment with the passbetween the rolls, a stock guide within .the box frame adapted to guidethe stock toward the pass between-the rolls, means for laterallydisplacing'the guide in a plane generally perpendicular to the plane ofthe bed plate and bisecting the angle between the roll axes and forlocking the guide in adjusted position, and means for holding the guideagainst angular displacement.

6. In an apparatus for rolling helicoid conveyer flight, a bed plate, apair of conical rolls supported on one side thereof, and adapted torotate about axes generally parallel with the plate, a

.box frame structure projecting from the side of the bed plate oppositethe side upon which the rolls are supported in general alignment withthe pass between the rolls, a stock guide within the box frame adaptedto guide the stock toward the pass between the rolls, means forlaterally displacing the guide in a plane generally perpendicular to theplane of the bed plate and bisecting the angle between the roll axesand' for locking the guidein adjusted position means for moving theguide longitudinally in a direction generally parallel'with thedirection of travel of the stock and forlocking the guide against suchmovement, and means for holding ,the guide against angular displacement.

'7. In an apparatus for cold rolling helicoid conveyer flight and thelike,-a bed plate, a supporting frame therefor, a pair of inclined rollshafts supported on the bed plate and constrained to adjustable movementin a plane parallel. withthe plane of the bed plate, a conical roll onthe end of each shaft, the rolls being in juxtaposition to oneanother-to form a pass between their opposed faces, separate power meansfor each ,each shaft, one of them being near each roll,

a foot associated with each bearing, projecting away from the plane ofthe roll axes, means associated with'each foot for positively, andmicrometrically, moving it in all directions in a plane parallel withthe plane of the roll axes and for locking it in position after suchmovement, separate adjustable means located in the plane of the rollaxes for positively preventing displacement in said plane, of the rollaxes in response to pressure applied at the rolls.

9. In combination, a pair of shafts having intersecting axes, agenerally conical forming roll on the end of each shaft nearest thepoint of intersection of the axes. bearings spaced along each shaft, oneof them being near each roll, a foot associated with each bearing,projecting away from the plane of the roll axes, and means associatedwith the feet for supporting the bearings' andadjustable means locatedin theplane of the roll axes for positively preventing displace-' mentin said plane, of the roll axes in response to pressure applied at therolls.

10, In combination, a pair of shafts having intersecting axes, agenerally conical forming roll on the endof each shaft nearest the pointof intersection of the axes, bearings spaced along each shaft, oneofthem being near each roll, a bed plate generally parallel with the planeof the axes, a foot associated with each bearing, resting upon theplate, means associated with each foot and the bed plate for positivelyand micrometrically, moving the foot in all directions in aplaneparallel with the bed plate and for looking it in position after suchmovement, separate adjustable means located in the plane of the rollaxes for positively preventing displaceto pressure applied at'the rolls.

- 1,1. In-comb'ination, a pair of shafts having intersecting axes, agenerally conical forming roll on the 'end of each shaft nearestthe'point of intersection' of the axes, bearings spaced along eachshaft, one of. them being near each roll, a. bed

plate generally'parallel'with theplane of the axes, a foot associatedwith eachbearin8, rest-- 2 ing upon the plate, and means associated withthe feet for supporting the bearings and adjustable means located in theplaneof' the roll axes for positively preventing displacement in saidplane, of the roll axes in response to pressure applied atthe rolls.

12. In combination, a pair of shafts having intersecting axes, agenerally conical forming roll on the end of each shaft nearest thepoint of intersection of the axes, bearings spaced along each shaft, oneof them being near each roll, a supporting sleeve encircling each shaftand positively aligning the bearings associated therewith, a bed plategenerally pa ailel with the plane of the axes, a foot associatvi witheach end of each sleeve for supporting the sleeve upon the bed plate,means associated with each foot and the bed plate for positively andmicrometrically moving the foot in all directions in a plane paralmeanslocated in the plane of the roll axes and engaging the sleeves forpositively preventing displacement in said plane of the roll axes inresponse to pressure applied at the rolls.

13. In combination, a pair of shafts having intersecting axes, agenerally conical forming roll on the end of each shaft nearest thepoint of intersection of the axes, bearings spaced along each shaft, oneof them being near each roll, a supporting sleeve encircling each shaftand positively aligning the bearings associated therewith, a bed plategenerally parallel with the plane of the axes, a foot associated witheach end of each sleeve for supporting thesleeye upon the bed plate,adjustable means located in the plane of the roll axes and engaging thesleeves for positively preventing displacementin said plane, of the rollaxes in responsetopressure applied at the rolls.'

HIRAM .0. FIJI-SON.-

